1 files changed, 25 insertions, 0 deletions
diff --git a/lib/gitlab/ci/pipeline/expression/lexeme/string.rb b/lib/gitlab/ci/pipeline/expression/lexeme/string.rb
new file mode 100644
index 00000000000..48bde213d44
--- /dev/null
+++ b/lib/gitlab/ci/pipeline/expression/lexeme/string.rb
@@ -0,0 +1,25 @@
+module Gitlab
+  module Ci
+    module Pipeline
+      module Expression
+        module Lexeme
+          class String < Lexeme::Value
+            PATTERN = /("(?<string>.+?)")|('(?<string>.+?)')/.freeze
+
+            def initialize(value)
+              @value = value
+            end
+
+            def evaluate(variables = {})
+              @value.to_s
+            end
+
+            def self.build(string)
+              new(string.match(PATTERN)[:string])
+            end
+          end
+        end
+      end
+    end
+  end
+end